I broke my oil pressure sensor when removing my carbs. I looked on partzilla and they have 5 different sensors for an 83 1100. Does anyone know why there are 5 different ones and which one I need to order?

They are all the same part. Honda's parts system is loaded down with duplicate parts, they could save a lot of space if they figured that out. What's amazing in this case is they are all the same price.